Bella is a Bridge Master’s cat who lives at a very famous location – Tower Bridge! Today she is very excited as it’s the Queen’s birthday and the Royal Barge will be passing through. Everyone around her is preparing for a big celebration and it’s Bella’s job to make sure everything is on track.

As she visits each member of the team we get a lovely insight in to the inner workings of the bridge. We meet Stan the Stoker, Eddy the Engineer, Olly the Oiler and Hannah the Cook, each of whom has a special role to play in the festivities.

Finally everything is ready and Bella sits down to watch for the Royal Barge. As the Queen nears the bridge the bascules start to rise but Bella spots a problem. The traffic lights are green and there’s a double decker bus heading right towards the big gap at the centre of the bridge!